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Add functions to twiddle the latch bits, patterned after the ones in Linux.

This commit is contained in:
bjh21 2001-04-22 15:00:13 +00:00
parent 85f0e37b44
commit 2a1570b5d9
2 changed files with 26 additions and 3 deletions
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22
sys/arch/arm26/ioc/latches.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: latches.c,v 1.1 2001/04/22 00:26:36 bjh21 Exp $ */
/* $NetBSD: latches.c,v 1.2 2001/04/22 15:00:13 bjh21 Exp $ */
/*-
* Copyright (c) 2001 Ben Harris
@ -29,7 +29,7 @@
#include <sys/param.h>
__KERNEL_RCSID(0, "$NetBSD: latches.c,v 1.1 2001/04/22 00:26:36 bjh21 Exp $");
__KERNEL_RCSID(0, "$NetBSD: latches.c,v 1.2 2001/04/22 15:00:13 bjh21 Exp $");
#include <sys/device.h>
#include <sys/systm.h>
@ -97,3 +97,21 @@ latches_attach(struct device *parent, struct device *self, void *aux)
bus_space_write_1(sc->sc_iot, sc->sc_ioh, LATCH_B, sc->sc_latchb);
printf("\n");
}
void
latcha_update(u_int8_t mask, u_int8_t value)
{
struct latches_softc *sc = (void *)the_latches;
sc->sc_latcha = (sc->sc_latcha & ~mask) | value;
bus_space_write_1(sc->sc_iot, sc->sc_ioh, LATCH_A, sc->sc_latcha);
}
void
latchb_update(u_int8_t mask, u_int8_t value)
{
struct latches_softc *sc = (void *)the_latches;
sc->sc_latchb = (sc->sc_latchb & ~mask) | value;
bus_space_write_1(sc->sc_iot, sc->sc_ioh, LATCH_B, sc->sc_latcha);
}

7
sys/arch/arm26/ioc/latchvar.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: latchvar.h,v 1.1 2001/04/22 00:26:36 bjh21 Exp $ */
/* $NetBSD: latchvar.h,v 1.2 2001/04/22 15:00:13 bjh21 Exp $ */
/*-
* Copyright (c) 2001 Ben Harris
@ -29,5 +29,10 @@
#ifndef _LATCHVAR_H_
#define _LATCHVAR_H_
extern struct device *the_latches;
extern void latcha_update(u_int8_t mask, u_int8_t value);
extern void latchb_update(u_int8_t mask, u_int8_t value);
#endif